Photocatalytic degradation of methyl orange and Congo red using C,N,S-tridoped SnO2 nanoparticles

Subject Areas : Journal of Physical & Theoretical Chemistry

Azita Nouri ¹ , Ali Fakhri ² , Arezu Nouri ³

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Received: 2014-07-21 Accepted : 2014-07-21 Published : 2014-01-01

Keywords: Photocatalytic degradation, Dye, SnO2 Nanoparticles, photocatalyst,

Abstract :

In this study, the photocatalytic degradation of methyl orange and Congo red dye was investigated inaqueous solution using C,N,S-tridoped SnO2 nanoparticles as a nano photocatalyst. The degradationwas carried out under different conditions including the photocatalyst amount, initial concentrationand pH of the solution. The results indicated that the degradation of methyl orange and Congo redwas strongly influenced by these parameters. The best conditions for the degradation of methylorange and Congo red were obtained. The optimum value of photocatalyst amount used was 0.4 g/L.It was found that the photodegradation efficiency increase with increasing the initial concentration ofmethyl orange and Congo red. The optimum pH of the system used is 6.5.